MD5 encryption and decryption website test, is MD5 encryption still safe?

We all know MD5 It's an encryption algorithm , It is often used to store passwords in databases . In the early days of the Internet , The website mainly saves passwords in the database in clear text , Of course, this is not the best choice , So people began to use MD5 To confuse passwords in the database . Technicians usually do website development , Passwords saved by registered users generally need to be encrypted , Otherwise, the database data will be stolen , It will cause the user password to be lost .

all the time , The commonly used encryption method is MD5, You can enter any length of string , The output with fixed length is obtained through calculation , And the same ciphertext can only be obtained when the plaintext is the same , And this algorithm is irreversible , Even encrypted ciphertext , Nor can plaintext be calculated by decryption algorithm .

Why do they all say MD5 Insecure encryption ？

however , Why do you say MD5 Encryption is not secure ？ In fact, the main reason is that the passwords set by most people are very simple , For example, the common “123456”,“888666” Wait weak password . This kind of simplicity can be achieved by converting commonly used strings , Or various common string permutations and combinations , convert to MD5 value , Then save it into a database table , That is what we often call the rainbow watch , Then directly check the rainbow table for comparison , thus , The weak password is exposed .

As early as 2010 year , The American Society of software engineering has considered MD5 The algorithm has been solved , No longer applicable . therefore , Someone will say MD5 It is no longer a secure encryption algorithm , It is not recommended to use it . however , about MD5 unsafe , There are also corresponding solutions , That's adding salt 、 Long passwords are used together .

But is it really safe to do so ？

hypothesis ,“123456” Generated MD5 by “e10adc3949ba59abbe56e057f20f883e”, That won't change , Does this mean that you can pass MD5 Unlock any password ？ It's not like this . Now there are many online MD5 Encrypted and decrypted website , such as ：（md5.cn）

 

This is a special decryption MD5 Website .MD5 Is a widely used cryptographic hash function , Can generate a 128 position （16 byte ） Hash value of （hash value）, It is used to ensure the integrity and consistency of information transmission .

Simply speaking , Can be used to protect our password , For example, the application we use 、 mailbox 、 Games etc. , Our login password is encrypted . Different companies use different encryption methods . therefore , In so many ways of saving passwords ,MD5 Is one of them .

for instance ： Suppose your password is 123456, However, the password stored on the other server after encryption may be “4QrcOUm6Wau+VuBX8g+IPg==” Strings like that . The advantage of this is that the other party will not know your password , And it's also mentioned above , because MD5 It's irreversible . So online MD5 The encryption and decryption website is mainly used for us to verify the data consistency , Know whether the data is complete and whether it has been tampered .

Ordinary MD5 encryption

We can enter a simple password to encrypt , If you use lucky numbers “888666” encryption , Then put it on the website to see if it can be decrypted . You can see , The encrypted value is “6532dc2eaf81691db2f64145d1e081cf”, Then use this value to md5.cn Try decrypting .

 

You can see , The encrypted value is “6532dc2eaf81691db2f64145d1e081cf”, Then use this value to md5.cn Try decrypting .

 

As shown in the figure above , It worked out ！！！

Complex encryption

Let's try a more complicated , You can add letters and numbers , Take this website + Write lucky numbers to see if you can crack .

 

You can see ,“jhckn888666” The encrypted value is “31d4b6b836b1dcafa59f483c3f731459”, Then we use this value to md5.cn Try decrypting .

 

You can see , Complex passwords are not so easy to decrypt , So you can set the password more complicated .

This MD5 Online encryption and decryption tools can use the network to encrypt online 、 Decrypt MD5. It's very simple to use , First, enter the encrypted or decrypted content and press the encryption or decryption to get the result .

Website features

1. Online encryption and decryption

Encryption is divided into 16 Bit case and 32 Bit case encryption results display , It will automatically recognize yes according to the entered value 16 A still 32 position .

2. Online tools

There are many other online tools available on the website , Very convenient and practical .

3. Batch decryption

This MD5 Encryption and decryption station also has a good function , It can be decrypted in batches , It can be operated directly .

It should be noted that , Such encryption and decryption websites only provide a verification of data integrity , It is not the use of such websites for other improper decryption .